Electric relay.



PATBN-TED MAY '1, 10%

M. SETTBR. ELECTRIC RELAY.

. APPLICATION FILED 0GT.31, 1904 "PAW - MICHAEL snr'rnn, or on caoo;ILLINOIS, assienon TO Acron ms ELEc'rRio COMPANY, or CHICAGO, ILLINOIS.

stscrsio RELAY.

No. emcee.

, citizen of the United States of America, and

a resident of Chicago, in the county of Cook and State of Illinois, haveinventeda certain new and useful Im rovement in Electric Relays, ofwhich the ollowing is a specification. My invention relates to relaysfor use in connection with electrical circuits in general, but adaptedmore particular] for use in electrical si naling systems, ant adaptedmore especial y for use in telephone systems.

Generally stated, the object of my invention is the provision of animproved, simplified, and highly-efficient relay; and a special objectis to provide an improved construction and arrangement of the armaturerelatively to the switch-springs or circuit opening and closingcontacts; and another object is to pro vide improved means for inclosingthe magnet and also forinclosing the switch s rings or contacts and theupper portion of t 1e armature; and it is'also an object,0f course, toprolocking-plate for holding the armature in' vide certain details andfeatures of improvement tending to increase the general cfiicicncy andserviceability of a relay of this particular character.

To the foregoing and other useful ends my invention consists in thematters hereinafter set forth and claimed.

In the accompanying drawings, Figure 1 is a side elevation oi a relayembodying the principles of my invention, certain portions thereof beingshown in longitudinal section. Fig. 2 is a rear end view of the same. Fi3 is a view of the forward end of the said may, a portion of theremovable cover being shown broken awa' Fig. 4 is a pcrs cctive of thearmature o the said relay. Big. 5 is a per spective of the forward endportion of the inagnet-shclh Fig. 6 is a perspective of the place. Fig.7 is a pers motive of the forward end portion of the relay, showing thefor 'ward portion of the removable coverbroken away.

As thus illustrated, my improved electric relay comprises anclcctromagnet A, provided, preferably, with terminals (1-, a", a and a,as shown in Figs. 1 and 2. The mag net-shell B is preferably made from asheetinctal blank or stamping. When folded into shape, the/said blank orstamping provides the shell with a'rear end wall I), the samehavfipeciflcetionof Letters Patent. Application flied 0ctobcr 91 1904.Serial No. 280,767.

Patenteu may i, 1906. i I

' in openings throu h which the said termina s reject. To this end wallthe core of the e eotromagnet 1s secured by means of a screw a".Furthermore, the said blank or stamping is so folded as to rovide theshell with a flat top portion 6. This top ortion rejects slightly at theforward end 0 the reay, so as tMverhang the forward end of the magnet.The said overhan ing ortion of the magnet-shell'is provider Wit iiatransverse slot oro ening b and is 'also provided at. its edge wit 1 asomewhat narrower opening b, leading inward to the'end of saidtransverse slot. In addition the'said overhanging end of themagnet-shell is provided with a threaded openin b, which is located'just outside of the said s 0t. When properly folded, the said blank orstampin also provides the magnet-shell with curvell side portions 6 thelower edges of which meet at the bottom of the shell. (See Figs. 2 and5.) The armature C is preferably disk-like in form, so as to practicallyclose the forward end of the magnet-shell. As shown, the ar mature isprovided with a threaded opening 0, adapted to receive anadjusting-screw c", the latter being locked in place by alock-nut c. Inthis way the distance between the armatu e and the core of the ma netcan be adjusted to suit requirements: he said armature is also providedat its upper edge with a neck portion a having laterally-projecting lugsc. It will be seen that the said neck portion 0 is extended upwardly andthence rearwardly and horizontally to pro vide an operatin -arm c.

When adjusted in place, armature rest upon the to ofthe' shell at eachend of the slot 5 1th the provision of the o ening b it is obvious thatthe neck of the saim armature can be easily insert ed edgewise into thesaid slot. When this has been done, the armatureis then held in place bythe locking-plate D. This lockinglate is formed with an opening d andalso s ioulder portions d, and in addition it is provided with adownwardly proiecting lip d. The screw (lPpasses through t 1 gages thethreaded openin shell. When secured in p ace, the shoe ders d of thesaid locking-plate engage the lugs c,

the lo s a of the the forwan edge of the slot b. Normally the saidarmature is held away from the core while .the lip d extendsldownwardlyagainst" e opening (2 and en- 72* in the ma nctupon the rear end 'ofthemagnet by means of a spring l3, provided at its end with a piece ofinsulation 6, adapted to bear upon-the arm 0 of the armreture. The saidspring is a sWit ell-spring and is, together with the interposed stripsof. insulation and the other two springs F and G, se-

' H ortion oi the lat .top' o f the'magnet-sheli. his can be accomp'hhed by inserting screws H through the said sprin s and strips ofinsulation and into the top oi the lliflIlGt-Sllfill. Normallv thesprings E and G ngage each other, while the springs E and F are out ofcontact with each other. (See Fig. 1.) The said switchsprin s areprovided, res )ectively, with ties: mine s e f, and g, Whic 1 projectfrom the rear end of the relay struct re as a Whole. Thus constructedthe switch-springs and the upper portion of the armature are protectedby a removable cover I. This cover, it will be seen, is rovided with alltlt top well i and an end We 5. and also with side walls i :1 tendingdownwardly and provided with lower curved portions '5 These curved portions i are ada ted to fit upon the sides oi the insg net-she and therebyretain the cover in lace. (See Figs. 2 and 3.) The forward orizontalportion i of the said cover is provided with an'opening for the screwThe operation is as follows: Normally the armature retains the positionshown in Fig. 1, the springs E and G being in electrical contact witheach other. However, soon as the magnet is energized by thepassage ofelectric current through its coils the armature is then attracted anddrawn toward the end of the magnet-core. In thus responding to the manetic influence of the magnet the armature ifts its arm a. This ofcourse in turn lifts the forward end of the'spring l and thereb bringsthe said sprin into contactwith t e s ring F. This action it will be rreadily un erstood, can be so regulated as to either permit thesprings-E and U to remain in contact with each other or to break FOL"switch-springs or circuit opening and (liming contacts can be arrangedand opcraied in accordance with the particular circuits be controlled.

A relay'of the lorcgoiln character is obvi 'ously sim lo andcomparatively economical to manufacture. its *mrts are easily removedfor re air or so sistution. Furthermore, with t 1e simple constructionshmvn thereley is less liable to get out of order. The

armature is easily removed and widen rcmOVcd ermits the magnet to beeasily r=- moved rom the forward end of the magnet shell. Also,asexplained', e singl'. blank stam ing is employed for melting the magnet-e 1e11, and this blank when i'olalcrl preyid'es both thearmature-menting and tlhe inclosure for the magnet. In other Wdrds,

the blank when folded constitutes c. c ombined armature-mounting and n'agnehslmll. The armature itself can obviously be made from a singleblanl: or stamping. This also true of the cover.

What, I claim as my invention is 1. A relay coin rising a magnet, acombined magnet-shell and armature-mounting iature suitably mounted onthe said combined magnet-shell and armature-mounting, switch springsalso carried by the said cornhined 'magnet shcll and armature mounting,the said armature being provided with an srrn for operating salesprings, and a removable sheet-rretal cover for said switchsprings andthe arm of said armature.

2. A relay comprising a magnet, a shell for said magnet, switch-springsmounted on said shell, an armature mounted on said shell and royidedwith a rcarwardly-ei:tending arm ror operating the forward end of saidsprings, and a removehle'cover iIMlOSlng said s rings and arm.

3. A relay comprising a combined magnet- .i" ell and armattire-mountingmade from a single sheet-metal blank or stamping, andcircuit-controlling contacts, together with an L-shapcd armature havinglateral bearing portions at its elbow.

i. A relay comprising a magnet-shell made from a sheet-metal blank orstamping, and

circuit-controlling contacts, together with portions at its elbow.

5.- A relay comprising magnet-shell made iroin a sheet-metal blank orstamping, and. provided with an end Wall and curved ide walls meeting attheir lower edges, circuit-controlling contacts, together with anls-shaped armature having lateral bearing portions at its elbow.

-6. A relay comprising an armature-mount inginade from a sheet-metalblank or stamping, a magnet encircled b portion of saidarnnature-mounting, and circnit-controlling contacts, together with, anL-shaped arm? tore having lateral bearing portions at its elbow.

'7. A relay comprising a combined rriagnetg a l and armature-mountingmade from a single sheet-metal blank or stan'iping, an ar mature carriedby said mounting, said arrna' ture being; also made from a singlesheetmetal blank -11" stamping, and circuit-con trollingcontacts, saidsheet-metal blank or stamping having a slot or recess in which thearmature is hung. I,

8. A relay comprising a magnet, a shell fo said magnet, said shellhaving a up per portion ovcrh anging its forward end, said overhangingportion being provided with. a

rsnsversc slot, and haying also an opening leading from its edge andcommunicating with one end. of said slot, an armature adapted to beinserted into said slot through said opening made from a singlesl1eet-metal blank, an an L-shaped armature havinq lateral bearing andprovided with laterallyrojecting lugs adapted to rest upon the shel ateach end of said slot, switch-springs operated by said armature, and alocking-plate for holding the said armature within said slot, 9. A relaycomprising a magnet, an armature-mountmg provided with a transverseslot, and having an 0 ening leading from its edge to one end of sai inga neck portion adapted to be inserted in sald slot byway of saidopening, said neck portion being provided with laterally-proecting lugsadapted to rest upon the armature-mounting at each end of said slot,means for holding the armature within said slot, and circuit-controllingcontacts.

' 10. A relay comprising a magnet, a ma net-shell inc osing said magnet,said shel having a fiat top, switch-springs with interposed ayers ofinsulation secured in a superimposed condition upon the rear portion ofsaid top portion of the shell, an armature hun upon the forward endportion of said she] and provided at its upper end with a slot, anarmature hay-- rearwardly-extending arm, and a piece of insulation onthe forward end of one of said springs adapted to engage the u persurface of said arm, and thereby hold t e armature normally away fromthe magnet.

11. A relay comprising a magnet, a mag net-shell formed from asheet-metal blank or stamping, bent downwardly and adapted to meet attheir lower edges, and provided also with a rear portion bent downwardlyto form the end wall of the magnet-shell, a screw inserted through saidend wall and into the core of the magnet, and terminals for. the magnetextending rearwardly through the said end wall, together with anarmature,and switchcontacts operated by said armature. Signed y me atChicago, Cook county, Illinois, this 25th day of October, 1904.

- MICHAEL SETTER.

said blank having side portions

